////////////////////////////////////////////////////////////////////////////////
// This file is part of the Mist compiler.                                    //
//                                                                            //
// Copyright (C) 2009 The Mist project                                        //
//                                                                            //
// For a list of contributors, see the COMMITTERS file.                       //
//                                                                            //
// The Mist compiler is free software: you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by       //
// the Free Software Foundation, either version 3 of the License, or          //
// (at your option) any later version.                                        //
//                                                                            //
// The Mist compiler is distributed in the hope that it will be useful,       //
// but WITHOUT ANY WARRANTY; without even the implied warranty of             //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              //
// GNU General Public License for more details.                               //
//                                                                            //
// You should have received a copy of the GNU General Public License          //
// in the COPYING file. If not, see <http://www.gnu.org/licenses/>.           //
////////////////////////////////////////////////////////////////////////////////

///
/// \file
/// Contains the implementation of the common string functions.
///

#include "common/string.hpp"

////////////////////////////////////////////////////////////////////////////////
// Includes                                                                   //
////////////////////////////////////////////////////////////////////////////////

#include <boost/foreach.hpp>
#define foreach BOOST_FOREACH

#include "common/bigint.hpp"

////////////////////////////////////////////////////////////////////////////////
// Function Implementations                                                   //
////////////////////////////////////////////////////////////////////////////////

string escape_string(const string& code) {
	string result = "";
	
	foreach (char c, code) {
		if (' ' <= c && c <= '~' && c != '\"' && c != '\\')
			result += c;
		else switch (c) {
			case '\b': result += "\\b"; break;
			case '\t': result += "\\t"; break;
			case '\n': result += "\\n"; break;
			case '\f': result += "\\f"; break;
			case '\r': result += "\\r"; break;
			case '\"': result += "\\\""; break;
			case '\\': result += "\\\\"; break;
			default:   result += "\\" + BigInt(int(c)).get_str(16);
		}
	}
	
	return result;
}
